Richard John Pentreath dating history

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Richard John (usually known as ‘Jan’) Pentreath is a British marine scientist who made major contributions to radioecology, particularly with regard to alpha-emitting nuclides in the marine environment. He went on to broaden the international system of radiological protection to include animals and plants with respect to different exposure situations, as well as protection of the animal as patient in veterinary medicine. He also played a major role in the success of the National Rivers Authority and its subsequent merging with other bodies to form the Environment Agency.